Provide answer. If y varies inversely as x^2, and x = 4 while y = 1/4, find x when y = 1.

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

Asquare parking lot has 6,400 square meters what is the length in meters

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible